Without a diagnosis, it's difficult to determine what a repair would be. Have you reached out to the Samsung customer service center in your area?
when i try to power up my samsung PCN5425R the red dot in the front keeps on blinking, and the screen never turns on. the sound of it starting up also happens but the picture and sound of the tv never starts and the red dot continues to blink. Is it possible to fix this by myself or would i be better off throwing it out?